Human Sadness. I believe human live in the earth with minimum capabilities people they don't have nothing to power to live with a guaranty a single day. People hope so they can do ever-think but he can do nothing with their short of life,
No one knows people thinking born to death a little are exposed from him, we think what's he does but I think people can do nothing as a person doesn't know his expire date.If we say our death day's then we do many more and we create a new world lifestyle.
That's is reason we never knows people who are scientist and philosopher thought,idea and many more only a few are published.